s, a, b, d, k, l, c, m, r, t, u are letters that make 'black mustard'
must, star, la, mustard, AC, mu, ar, tar, lack, black, Mus, US, AR, LA, Black, Ac, Ar, La, Ta, lac are words within 'black mustard'
1 possible definitions for 'black mustard'
Under this definition, black mustard is a noun and has the following properties:
Brassica nigra has the same meaning as black mustard
'black mustard' can be a type of mustard.
'black mustard' can be a member of Brassica, genus Brassica.
mustard seed is a part of black mustard.